146428551 has 6 divisors (see below), whose sum is σ = 211507920. Its totient is φ = 97619028.

The previous prime is 146428549. The next prime is 146428553. The reversal of 146428551 is 155824641.

It is a happy number.

146428551 is a `hidden beast` number, since 1 + 4 + 642 + 8 + 5 + 5 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (146428549) and next prime (146428553).

It is not a de Polignac number, because 146428551 - 2¹ = 146428549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146428553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8134911 + ... + 8134928.

It is an arithmetic number, because the mean of its divisors is an integer number (35251320).

Almost surely, 2^146428551 is an apocalyptic number.

146428551 is a deficient number, since it is larger than the sum of its proper divisors (65079369).

146428551 is a wasteful number, since it uses less digits than its factorization.

146428551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16269845 (or 16269842 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 146428551 is about 12100.7665459672. The cubic root of 146428551 is about 527.0784436999.

The spelling of 146428551 in words is "one hundred forty-six million, four hundred twenty-eight thousand, five hundred fifty-one".